从 HTML 文档 (Python) 中提取 CSS 和 HTML 评论

Question

我正在使用 Python 将 HMTL 代码传递到 BeautifulSoup，并且我的输出因 HTML 注释而出错。我有这个 python 脚本来删除 HTML 评论，但它无法删除嵌套在 CSS 评论中的 HTML 评论。

我的代码：

from bs4 import BeautifulSoup, Comment   

   input_text = ""

   for line in open('output.txt'):
           input_text+=line

  soup = BeautifulSoup(input_text)
  comments = soup.findAll(text=lambda text:isinstance(text, Comment))
  [comment.extract() for comment in comments]
  print soup

例如，它从我的测试输入中删除了所有 HTML 评论，除了：

<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Verdana; panose-1:2 11 6 4 3 5 4 4 2 4;} @font-face {font-family:inherit;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman",serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} -->

这是输入中的一段代码，其中包括在运行我的脚本之后成功删除的 2 条评论，以及未删除的评论：

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--><style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Verdana; panose-1:2 11 6 4 3 5 4 4 2 4;} @font-face {font-family:inherit;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman",serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1" /> </o:shapelayout></xml><![endif]-->

我不确定首先删除 CSS 评论的最佳方法。我不需要费心删除 CSS 注释的内容，只需删除 /* */，因为其余的应该与嵌套在

中的 HTML 注释一起删除

Answer 1

我解决了我的问题。我使用正则表达式删除了它们，对于任何好奇的人，这是我的新代码：

from bs4 import BeautifulSoup, Comment
import re

input_text = ""

for line in open('output.txt'):
    input_text+=line

#extract all CSS comments
text = re.sub('\/*', '', input_text)
text = re.sub('\*/', '', text)

soup = BeautifulSoup(text)

#extract all HTML comments
comments = soup.findAll(text=lambda text:isinstance(text, Comment))
[comment.extract() for comment in comments]

print soup

从 HTML 文档 (Python) 中提取 CSS 和 HTML 评论

Extract both CSS and HTML comments from HTML doc (Python)

html

css

python

beautifulsoup